package com.biao.cloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    // 正常访问
    public String paymentInfo_ok(Integer id) {
        return "线程池" + Thread.currentThread().getName() + " paymentInfo_ok,id: " + id;
    }


    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",      // 如果异常,就执行下面对应的方法: paymentInfo_TimeOutHandler
            commandProperties = {
                    // // 方法调用响应在3秒以内,就走这个方法正常的逻辑
                    @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
            })
    public String paymentInfo_TimeOut(Integer id) {
        try {
            TimeUnit.SECONDS.sleep(3);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
//        int i = 10 / 0;
        return "线程池" + Thread.currentThread().getName() + " paymentInfo_TimeOut耗时3秒,id: " + id;
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池:  " + Thread.currentThread().getName() + "  8001系统繁忙或者运行报错，请稍后再试,id:  " + id + "\t" + "o(╥﹏╥)o呜呜呜~";
    }

    //=====服务熔断     表示10秒种访问10次,失败率在60% 的时候就不能用,调用下面的方法: paymentCircuitBreaker_fallback
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),                      // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),         // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),   // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),       // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName() + "\t" + "调用成功，流水号: " + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " + id;
    }
}
